EXTECH 461920 Mini Laser Photo Tachometer Counter

AUD $322.00 .( AUD $354.20 inc. GST )

Available on back-order

For all your equipment calibration needs, visit our MyCalibration website.

Free Delivery on orders over $1000
Shipping time may vary for certain products*

Product Enquiry

If you would like more information regarding this product, simply email us here.

  • Drop files here or
    Accepted file types: jpg, gif, png, pdf, Max. file size: 1 MB, Max. files: 4.
    • This field is for validation purposes and should be left unchanged.



    • 461920 Tachometer Mini Laser Photo  Counter

    • Make non-contact RPM measurements of rotating objects

    • Use reflective tape on object to be measured and point the integral laser

    • Large 5 digit LCD display with backlighting

    • Memory button for Last/MAX/MIN readings

    • Counter function counts up to 99,999 revolutions

    • Rugged, double molded housing

    ce     warranty12

    Authorised Australian Distributor.


    SKU: 461920 Categories: , Tag:

    Extech 461920 Tachometer Mini Laser Photo  Counter.

    Mini Laser Photo Tachometer Counter

    Make non-contact RPM measurements (2 to 99,999 rpm) of rotating objects by pointing the integral laser (1.6-foot target distance) at the reflective tape placed on the object to be measured.

    Features Overview

    Measurements are displayed on the easy-to-read large five-digit LCD screen. The memory button holds last reading and recalls min/max readings display. Counter function counts to 99,999 revolutions. Rugged double molded housing for better grip. Complete with 9-volt battery, reflective tape, and user manual.

    Tachometer Applications:

    Motor speed, moving fans, pumps, and gears, propeller devices, and many other general maintenance, production, and automotive uses.

    What is a Tachometer?

    A tachometer is a device that measures the angular speed of a rotating shaft in terms of revolutions per minute (RPM). Also, a tachometer can measure linear speed in terms of feet per minute (feet/minute) or meters per minute.

    How do Contact Tachometers Operate?

    The sensor tip is placed in direct contact with the rotating object. After 2 seconds an accurate reading is displayed. Linear surface speed can also be measured by placing the edge of the wheel on the moving object.

    How do Photo (Non-contact) Tachometers Operate?

    First, a small piece of reflective tape (approximately 1/4-inch) is mounted on the object to be measured. Second, the light beam or laser is pointed at the revolving tape. The reflection from the tape provides a reading to be displayed and updated once per second. For the most accurate measurements, the distance between the tachometer and the reflective tape should be within 6 inches for a light beam and up to 6.5 feet for a laser. Fluorescent or bright ambient lights may interfere with the measurement.

    Which Extech Tachometer Model Is the One for You?

    A non-contact (photo) tachometer was designed for applications where it is not feasible to have the tachometer come in contact with the rotating device. This is the case in high-speed applications and/or where the object to be measured is not easily reached. A contact tachometer is also available for applications where direct contact of the tachometer with the object is preferred. You can also select a combination (contact/non-contact) tachometer for the maximum in flexibility.

    Accessory: Reflective Tape for Photo Tachometers

    For use with any brand Photo Tachometer. Place a piece of reflective tape on the object to be measured and point the tachometer’s integral light beam at it. Ten reflective tape strips.

    RPM range 2 to 99,999rpm
    Count range 1 to 99,999rev (revolution)
    Max Target Distance 1.6ft (500mm)
    Basic Accuracy ±0.05%
    Resolution 0.1rpm, 1rev
    Memory Min/Max/Last
    Dimensions 160 x 60 x 42mm
    Weight 151g


    Weight .5 kg


    There are no reviews yet

    Be the first to review “EXTECH 461920 Mini Laser Photo Tachometer Counter”

    You may also like…

    Need help? Call our support team 1800 358 531

    announcement  EOFY specials It's that time of the year again - the end of financial year! And here at MyMeter.

    PLUS,  Enjoy a 5% site-wide discount on all products when your cart total exceeds $1000.